How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

ThursdayNone
Friday100.0*Chance in playoffs100.0*Average seed
Norfolk 3 Hershey 1 In
+0.6
Providence 2 Manchester 1 (ot)-1.9
-0.2
Saturday100.0*Chance in playoffs100.0*Average seed
Binghamton 4 Norfolk 2 -0.3
Worcester 2 Providence 0 +0.3
Albany 5 Springfield 2 -0.2
Points
Chance Will Make Playoffs